Universal bench motor stand



J 1,626,923 W 1927' w. M. DRENNON UNIVERSAL BENCH MOTOR STAND Filed Dec.10. 1924 2 Sheets-Sheet 1 May 3,1927. 1,626,923

w. M. DRENNON UNIVERSAL BENCH MOTOR STAND Filed De'c. 10. 1924 2Sheets-Shoot 2 i fi r fir 10 7 X T m 1., l j o OO 6 "M, d C A w w I; O ix i gwue'nkot M R 64 9.); rug/ duce Patented May 3, 1927.

UNITE!) STATES WILLIAM MARTIN DRENNON, OF ANAHEIM, CALIFORNIA.

UNIVERSAL BENCH MOTOR STAND.

Application filed December 10, 1924. SeriaI No. 754,973.

a simple bench stand which can be readily mounted upon an ordinarylnachinists work bench and which. is constructed in such a way as tosupport the cylinder block in position and at the same time enable thecylinder block to be held in different positions.

while workis being; performed upon it; also toprovidc a bench stand ofthis kind with means for supporting; the carriage for the tool whichwill. enable the tool tobe positioned over the block and moved whendesired into operating position.

Further objects of the invention will ap pear hereinafter.

The invention consists in the novel parts and combination of parts to.be described. hereinafter, all of which contribute to proan efficientuniversal bench motor stand. e y

A preferred embodiment of the invention is described in the followingspecification,.

while thebroad scope of the invention is pointed out in the appendedclaims.

In the drawing 7 Figure 1 is-a perspective showinga porti on of'a benchwithmy bench stand applied to it. This view shows the post of the benchstand broken away but indicates in dotted lines themanner in which thestand will. operate to support the cylinder block.

Fig. is a plan of the bench stand and showing a portionof the benolncertain parts being); broken away.

F n. 3 is a side elevation of the bench stand and bench, andparticularly illustrating the manner in which a tool and motor fordriving the same may be supported and brought into operating positionover the block. U

Fig. 4 is a side elevation of the lowerp0rtion. of the bench stand andbroken away to further illustrate the means forholding the cylinderblock in different rotative or oriented positions. 7

Fig. 5 is a front elevation of the rotary head of the bench stand.

. In practicing my invention, I provide a base plate 1' which may beattached on the upper side of a machinists bench 2. by any suitablemeans. At its forward end I provide a bracket 3 which is pivotallyattached to the forward end of the plate on a horizontal axis by meansof a bolt 4. At this point the plate 1 is provided with two downwardlyprojecting toes 5 (see Figure 4:) with vertical forward faces which areengaged by the rear face of the bracket 3 so as to support the bracketin an upright position.

. The body of this bracket 3 is in the form of a vertical plate, and onits outer face a rotary head 6 is pivotally mounted by means of a bolt7, the axisof which is disposed at right angles to the axis of the bolt4.

The outer side of the rotary head 6 is provided with means for securingthe same to a cylinder block 8. For this purpose, near its lower edgethe rotary head is provided with a horizontal shoulder 9 which operatesas a rest to support the flange 10 of the cylinder block. and I preferto provide the shoulder 9 with one or more pintles 11 which are spacedapart to correspond with the regular bolt-holes which are formed in theflange 10. In this way the shoulder 9 not only operates to support theblock, but will prevent its shifting on the rotary head. In addition tothis, on the opposite side of the axis of rotation of the bolt 7 Iprovide means for securing the block to the rotary head, and this lastnamed means is preferably in the fori'n of through bolts 19., thethreads of. which engage the regular tapped openings 13 which areprovided on the side of the block where the water connection is made tothe block. The position of these pintles 11 and the bolts 12 of coursewould be varied. and the character of: these connections would beadapted, to suit the particular cylinder block which was being operatedupon.

, Suitable means is provided for holding the rotary head in differentrotated or oriented positions. For this purpose I provide a slip pin 14(see Figure 2) mounted in a suitable guide 15 provided with a spring 16for normally holding the head of the pin in one of a plurality ofopenings 17; the openings 17 are placed equidistant inzthe rotary head:the guide for the slip pin 14 is secured in the upper side of thebracket 3.

r The slip pin 14 should be short enough so that its head 18'will notinterfere with the bracket 3 beingthrown back in a position to rest onthe base plate 1.

iii

A post 19 is mounted in a suitable boss 20 on the base plate and extendsvertically upward. On the upper portion of the post 19 I provide meansfor supporting a radial arm 21, which arm supports a carriage 22 whichis movable along the arm. This carriage is provided with means forsupporting a vertical tool to be used in operating upon the cylinderblock. For this purpose the carriage 22 is in the form ot a guide sleevefor a vertical spindle 23, the end of which carries a motor 24:. Themotor has a vertical shaft and on the under side of the motor the shaftis provided with a chuck 25 to hold a drill or any other tool. Thespindle 23 is held against rotation by means of a lceyway 26 receiving.a set screw 27 carried by the carriage 22. The motor is attachedco-axially on the spindle and the spindle must be non-rotatable toresist the reaction of the motor in driving the tool.

The arm 21 preferably consists of two bars, the inner ends of which aresecured in a split collar 28 carried on the post 19. This collar 28 maybe supported on another collar 29 which may be secured rigidly at anyheight by means of a set screw 30.

Suitable means is provided for securing the split collar 29 to the post.This means may be in the form of a cam 31 (see Figure 2) mounted on thebolt 32 and cooperating with a cam face 33 on one of the ears 3% of thesplit collar. Any suitable means may be provided for raising andlowering the spindle 23, but I prefer to accomplish this by means of alever 35, one end of which is secured to the cam 31 and the other end ofwhich has a. slot. 36 receiving a pin 37 which projects from the side ofthe spindle 23. The outer end of the lever has a handle 38 which enablesthe lever to he swung up or down at will. In Figures 2 and 3 the splitcollar 28 does not clamp the post tightly, and the arm 21 can then beswung around readily into any position desired; however, when thespindle 23 has been brought to the proper position over the point wherethe tool is to operate, the depression of the lever 35 will operate thecam 31 to clamp the collar 28 rigidly to the post, and by reason of theslot 36 this downward movement of the lever will also slide the spindledown to apply the tool to the work.

It is understood thatthe embodiment of the invention described herein isonly one of the many embodiments this invention may take. and I do notwish to be limited in the practice of the invention, nor in the claims,to the particular embodiment set forth.

hat I claim is 1. In a bench stand for supporting the cylinder block ofan engine, the combination of a base-plate constructed to rest upon thebench, a rotary head supported on the baseplate so as to rotate on ahorizontal axis,

said head having a transverse shoulder to be engaged by the flange ofthe cylinder block, a bolt carried by the rotary head on the oppositeside of the said axis of rotation for connection to regular tapped holesin the block means 'For holding the rotary head in a plurality ofdifferent positionsa post extending up from the base-plate, a radial armcarried by the post, and a carriage movable along the arm for supportinga motor for driving a vertical tool to operate upon the block.

2. In a bench stand for supporting the cylinder block of an engine thecombination of a base-plate constructed to rest upon the bench, a rotaryhead supported on the base-plate so as to rotate on a horizontal axis,said head having a transverse shoulder with a pintle projecting from theshoulder to engage in a bolt opening in the flange of the cylinderblock, and a bolt carried by the rotary head on the opposite side of thesaid axis of rotation for connecting to regular tapped holes in theblock, a post extending up from the base plate, a rotary arm carried bythe post, and a carriage movable along the arm for supporting a verticaltool to operate upon the block.

3. In a bench stand for supporting the cylinder block of an engine, thecombination of a base-plate constructed to rest upon the bench, a rotaryhead supported on the baseplate so as to rotate on a horizontal axis,said head having a transverse shoulder to be engaged by the flange ofthe cylinder block, means carried on the opposite side of the said axisof rotation for connecting to the regular tapped holes in the block, apost extending up from the base plate, a split collar mounted on thepost, means for clamping the split collar, a substantially horizontalarm extending out from the split collar, a carriage mounted to slide onthe arm, and a vertical spindle guided to slide through the carriage.and constructed to support a motor for driving a tool.

4. In abeneh stand for supporting the cylinder block of an engine, thecombination of a base-plate constructed to rest upon the bench, a rotaryhead supported on the baseplate so as to rotate on a horizontal axis,said head having a transverse shoulder to be engaged by the flange ofthe cylinder block, means carried by the rotary head on the oppositeside of the said axis of rotation for connecting to the block to securethe same on the head, a post extending up from the base plate, a splitcollar mounted on the post. a substantially horizontal arm carried bythe split; collar and. extending radially from the post. a carriagemovable along the arm, a spindle mounted to slide vertically through thecarriage, a lever for raising or lowering the spindle pivoted on thesplit collar, a cam device associated with the pivot point of said leverfor clamping the split collar to the post, said spindle having means forcarrying a motor for driving a tool.

5. In a bench stand for supporting the cylinder block of an engine, thecombination of a base plate constructed to rest upon the bench, abracket pivotally attached to the base plate so as to rotate on asubstantially horizontal axis, said base plate having means for holdingsaid bracket in an upright position, a rotary head pivotally mounted onsaid bracket to rotate on a horizontal axis substantially at rightangles to the first named WILLIAM MARTIN DRENNON.

